<PAGE> PAGE 1
000 B000000 12/31/1999
000 C000000 809559
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 TCW CONVERTIBLE SECURITIES FUND, INC.
001 B000000 811-4980
001 C000000 2132440000
002 A000000 865 SOUTH FIGUEROA STREET
002 B000000 LOS ANGELES
002 C000000 CA
002 D010000 90017
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
007 C011100 11
007 C011200 12
007 C011300 13
007 C011400 14
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
007 C012000 20
007 C012100 21
007 C012200 22
007 C012300 23
007 C012400 24
007 C012500 25
007 C012600 26
007 C012700 27
007 C012800 28
007 C012900 29
<PAGE> PAGE 2
007 C013000 30
008 A000001 TCW INVESTMENT MANAGEMENT COMPANY
008 B000001 A
008 C000001 801-4980
008 D010001 LOS ANGELES
008 D020001 CA
008 D030001 90017
010 A000001 INVESTORS BANK & TRUST COMPANY
010 B000001 85-720
010 C010001 BOSTON
010 C020001 MA
010 C030001 02116
012 A000001 THE BANK OF NEW YORK
012 B000001 84-3161670
012 C010001 NEW YORK
012 C020001 NY
012 C030001 10277
012 C040001 0770
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 LOS ANGELES
013 B020001 CA
013 B030001 90017
015 A000001 INVESTORS BANK & TRUST COMPANY
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02116
015 E010001 X
018 000000 Y
019 A000000 N
019 B000000 0
020 A000001 MERRILL LYNCH
020 B000001 13-5674085
020 C000001 130
020 A000002 CITATION GROUP
020 C000002 86
020 A000003 GOLDMAN SACHS
020 B000003 13-5108880
020 C000003 67
020 A000004 MONTGOMERY SECURITIES
020 B000004 94-1701676
020 C000004 33
020 A000005 FIRST BOSTON
020 B000005 13-5659485
020 C000005 22
020 A000006 WEDBUSH MORGAN SECURITIES
020 C000006 19
020 A000007 MORGAN STANLEY
020 B000007 13-2655998
020 C000007 14
020 A000008 BRIDGE TRADING CO
<PAGE> PAGE 3
020 C000008 10
020 A000009 BEAR STEARNS
020 B000009 13-3299429
020 C000009 9
020 A000010 GRUSS, OSCAR
020 B000010 13-2913779
020 C000010 9
021 000000 439
022 A000001 MORGAN STANLEY
022 B000001 13-2655998
022 C000001 83176
022 D000001 45054
022 A000002 GOLDMAN SACHS
022 B000002 13-5108880
022 C000002 76094
022 D000002 48535
022 A000003 MERRILL LYNCH
022 B000003 13-5674085
022 C000003 76118
022 D000003 36812
022 A000004 FIRST BOSTON
022 B000004 13-5659485
022 C000004 47365
022 D000004 31757
022 A000005 MORGAN J.P.
022 B000005 13-3224016
022 C000005 23272
022 D000005 20332
022 A000006 LEHMAN BROTHERS
022 B000006 13-2518466
022 C000006 21620
022 D000006 21946
022 A000007 MONTGOMERY SECURITIES
022 B000007 94-1701676
022 C000007 12311
022 D000007 24527
022 A000008 SOLOMON SMITH BARNEY
022 B000008 13-1912900
022 C000008 14926
022 D000008 12745
022 A000009 DONALDSON, LUFKIN & JENRET
022 B000009 13-2741729
022 C000009 16889
022 D000009 10515
022 A000010 ROBERTSON STEPHENS
022 B000010 94-2524501
022 C000010 4492
022 D000010 14561
023 C000000 418716
023 D000000 359111
024 000000 Y
<PAGE> PAGE 4
025 A000001 MORGAN STANLEY, APPLIED MATERIALS
025 B000001 13-2655998
025 C000001 E
025 D000001 8608
025 A000002 GOLDMAN SACHS, YAHOO!
025 B000002 13-5108880
025 C000002 D
025 D000002 7267
025 A000003 MORGAN STANLEY, QUALCOMM
025 B000003 13-2655998
025 C000003 E
025 D000003 5622
025 A000004 LEHMAN BROTHERS
025 B000004 13-2518466
025 C000004 D
025 D000004 4681
025 A000005 MERRILL LYNCH, TIME WARNER
025 B000005 13-5674085
025 C000005 D
025 D000005 4627
025 A000006 MORGAN STANLEY, MCI WORLDCOM
025 B000006 13-2655998
025 C000006 E
025 D000006 3849
025 A000007 MORGAN STANLEY, CISCO SYSTEMS
025 B000007 13-2655998
025 C000007 E
025 D000007 3691
025 A000008 MERRILL LYNCH, LUCENT TECHNOLOGIES
025 B000008 13-5674085
025 C000008 E
025 D000008 3087
026 A000000 N
026 B000000 Y
026 C000000 Y
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 N
028 A010000 0
028 A020000 0
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 0
<PAGE> PAGE 5
028 C020000 0
028 C030000 0
028 C040000 0
028 D010000 0
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.000
048 A010000 100000
048 A020000 0.750
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
<PAGE> PAGE 6
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 100000
048 K020000 0.500
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 N
054 C000000 Y
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 N
055 B000000 N
056 000000 N
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 0
062 A000000 Y
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
<PAGE> PAGE 7
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 4.9
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 82.4
062 Q000000 0.0
062 R000000 23.0
063 A000000 0
063 B000000 2.6
064 A000000 N
064 B000000 N
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 N
066 E000000 N
066 F000000 N
066 G000000 Y
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 Y
070 B010000 Y
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 N
070 E020000 N
070 F010000 Y
070 F020000 N
070 G010000 N
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 Y
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 N
<PAGE> PAGE 8
070 M020000 N
070 N010000 Y
070 N020000 Y
070 O010000 Y
070 O020000 N
070 P010000 N
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 N
071 A000000 495523
071 B000000 521906
071 C000000 413226
071 D000000 120
072 A000000 12
072 B000000 11924
072 C000000 5825
072 D000000 0
072 E000000 0
072 F000000 2381
072 G000000 42
072 H000000 0
072 I000000 55
072 J000000 108
072 K000000 0
072 L000000 50
072 M000000 83
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 55
072 R000000 30
072 S000000 5
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 109
072 X000000 2918
072 Y000000 0
072 Z000000 14831
072AA000000 91941
072BB000000 41626
072CC010000 82202
072CC020000 0
072DD010000 14831
072DD020000 0
072EE000000 50541
073 A010000 0.3500
073 A020000 0.0000
073 B000000 1.2000
<PAGE> PAGE 9
073 C000000 0.0000
074 A000000 0
074 B000000 0
074 C000000 23355
074 D000000 393824
074 E000000 100242
074 F000000 9503
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 2121
074 M000000 0
074 N000000 529045
074 O000000 0
074 P000000 227
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 51210
074 S000000 0
074 T000000 477608
074 U010000 42197
074 U020000 0
074 V010000 11.32
074 V020000 0.00
074 W000000 0.0000
074 X000000 3078
074 Y000000 0
075 A000000 0
075 B000000 427025
076 000000 9.56
077 A000000 Y
077 B000000 Y
077 Q010000 Y
078 000000 N
080 A000000 NATIONAL UNION FIRE INSURANCE CO
080 C000000 8000
081 A000000 Y
081 B000000 20
082 A000000 Y
082 B000000 10
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
086 A010000 207
<PAGE> PAGE 10
086 A020000 2044
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON STOCK
087 A020000 872340104
087 A030000 CVT
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 N
SIGNATURE PETER DIBONA
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information
extracted from the TCW Convertible Securities Fund,
Inc. form N-SAR for the period ended December 31, 1999
and is qualified in its entirety by reference to
such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 1
<NAME> TCW Convertible Securities Fund, Inc.
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 391,803,834
<INVESTMENTS-AT-VALUE> 526,924,496
<RECEIVABLES> 2,120,884
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 529,045,380
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 51,437,840
<TOTAL-LIABILITIES> 51,437,840
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 342,711,694
<SHARES-COMMON-STOCK> 42,196,924
<SHARES-COMMON-PRIOR> 41,989,895
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (224,816)
<ACCUM-APPREC-OR-DEPREC> 135,120,662
<NET-ASSETS> 477,607,540
<DIVIDEND-INCOME> 5,824,786
<INTEREST-INCOME> 11,923,998
<OTHER-INCOME> 0
<EXPENSES-NET> 2,917,419
<NET-INVESTMENT-INCOME> 14,831,365
<REALIZED-GAINS-CURRENT> 50,315,333
<APPREC-INCREASE-CURRENT> 82,201,510
<NET-CHANGE-FROM-OPS> 147,348,208
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 14,831,365
<DISTRIBUTIONS-OF-GAINS> 50,541,068
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 207,029
<NET-CHANGE-IN-ASSETS> 84,019,402
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 919
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,380,623
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,917,419
<AVERAGE-NET-ASSETS> 427,024,776
<PER-SHARE-NAV-BEGIN> 9.37
<PER-SHARE-NII> 0.35
<PER-SHARE-GAIN-APPREC> 3.15
<PER-SHARE-DIVIDEND> (0.35)
<PER-SHARE-DISTRIBUTIONS> (1.20)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.32
<EXPENSE-RATIO> 0.68
</TABLE>
INDEPENDENT AUDITORS' REPORT
To the Board of Directors of
TCW Convertible Securities Fund, Inc.:
In planning and performing our audit of the financial statements of TCW
Convertible Securities Fund, Inc. (the "Fund") for the year ended December 31,
1999, we considered its internal control, including control activities for
safeguarding securities, in order to determine our auditing procedures for the
purpose of expressing our opinion on the financial statements and to comply with
the requirements of Form N-SAR, not to provide assurance on internal control.
The management of the Fund is responsible for establishing and maintaining
internal control. In fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and related costs of
controls. Generally, controls that are relevant to an audit pertain to the
entity's objective of preparing financial statements for external purposes that
are fairly presented in conformity with generally accepted accounting
principles. Those controls include the safeguarding of assets against
unauthorized acquisition, use or disposition.
Because of inherent limitations in internal control, error or fraud may occur
and not be detected. Also, projection of any evaluation of internal control to
future periods is subject to the risk that it may become inadequate because of
changes in conditions or that the effectiveness of the design and operation may
deteriorate.
Our consideration of internal control would not necessarily disclose all matters
in internal control that might be material weaknesses under standards
established by the American Institute of Certified Public Accountants. A
material weakness is a condition in which the design or operation of one or more
of the internal control components does not reduce to a relatively low level the
risk that misstatements caused by error or fraud in amounts that would be
material in relation to the financial statements being audited may occur and not
be detected within a timely period by employees in the normal course of
performing their assigned functions. However, we noted no matters involving
internal control and its operation, including controls for safeguarding
securities, that we consider to be material weaknesses as defined above as of
December 31, 1999.
This report is intended solely for the information and use of management, the
Board of Directors of TCW Convertible Securities Fund, Inc., and the Securities
and Exchange Commission.
/s/ Deloitte & Touche LLP
Los Angeles, California
February 11, 2000
